Door securing apparatus

ABSTRACT

The combination of a door lock, including a door-locking bolt and a bolt operating handle swingable to turn the bolt between locking and unlocking positions, and apparatus coupled to the handle to prevent unauthorized turning of the handle.

United States Patent 11 1 1111 3,916,655 Racobs 5] Nov. 4, 1975 1 DOORSECURING APPARATUS 2,575,401 11/1951 Simmons 70/211 2,737,044 3/1956Christensen et al. 70/212 [76] Inventor Charles Rambs Sagmaw, Mlch-3,210,972 10/1965 Johnson 70/211 22 Filed; Ju|y 2 197 3,602,017 8/1971Bauer 3,643,478 2/1972 McPeake 70/212 [21] Appl. No.: 490,587

R 1 ed U o D FOREIGN PATENTS OR APPLICATIONS e at Apphcam" 348,0514/1931 United Kingdom 70 144 [62] Division of Set, No. 311,279, Dec. 1,1972, Pat. No.

Przmary ExammerPaul R. Gilliam Assistant Examiner-Victor N. Sakran [52]US. Cl. 70/145; 70/211; 70/178 51 Int. 01. E05B 55/00; 6056 5/00 or swam[58] Field of Search 70/145, 144, 211, 212,

70/178 [57] ABSTRACT The combination of a door lock, including a door-[56] References Cited locking bolt and a bolt operating handle swingableto UNITED STATES PATENTS turn the bolt between locking and unlockingpositions, 674,582 5/1901 Lewy 70/178 and apparatus coupled to thehandle to prevent unau- 1,388,711 8/1921 Hoffman.... 70/145 thorizedturning of the handle, 2,333,584 11/1943 Rosberg 70/211 2,377,036 5/1945Quarfoot 70/ 178 4 Claims, 7 Drawing Figures DOOR SECURING APPARATUSThis is a division of application Ser. No. 311,279, filed in the U.S.Pat. office on Dec. l, l972, now U.S. Pat. No. 3,826,117.

BACKGROUND OF THE INVENTION This invention relates to security devicesand more particularly to apparatus for precluding the unauthorizedturning of a bolt actuating handle on a door lock.

Houses are generally provided with doorways having an inner door whichopens inwardly and a confronting outer door which opens outwardly toenable people to quickly and easily enter and leave the house. In a warmclimate, the outer door generally constitutes a screencovered door whichpermits the free flow of air to and from the house when the inner dooris ajar. Even though the screen-covered door is locked from the inside,it is relatively easy for a burglar to gain access to the house when theinner door is unlocked or ajar. A burglar need merely to slit thescreen, place his hand through the slit, and turn the bolt operatinghandle on the lock mounted inside the screen-covered door to unbolt thescreen-covered door so that it may be swung outwardly. Accordingly, itis an object of the present invention to provide apparatus which willdeter such unauthorized access to a building. I

It is another object of the present invention to provide apparatus whichwill selectively prevent the unauthorized turning of a bolt operatinghandle on a door lock.

It is a further object of the present invention to provide a door handleretaining device which reacts between a door locking bolt, which isoperated by a handle, and the handle.

A further object of the present invention is to provide a door handleretaining device including a rod-like member forming a loop whichreceives part of the handle and another loop receiving a door lockingbolt, when the bolt is in the extended, locking position.

It is another object of the present invention to provide a hoodoverlying the handle of a lock disposed on the inside of a door andmounting a key operable device for turning the handle.

SUMMARY OF THE INVENTION Apparatus for preventing the turning of ahandle on a door lock, which includes a door-locking bolt, operated by ahandle, comprising: means reactable between the bolt and the handlemeans for preventing the unauthorized turning of the handle.

Other objects and advantages of the present invention will becomeapparent to those of ordinary skill in the art by the followingdescription when considered in relation to the accompanying drawings, inwhich:

FIG. 1 is a side elevational view of a door handle securing device,constructed according to the present invention, mounted on a doormounted door lock;

FIG. 2 is an end elevational view of apparatus constructed according tothe present invention, taken along the line 22 of FIG. 1;

FIG. 3 is a partly sectional bottom plan view, of the apparatusillustrated in FIGS. 1 and 2 FIG. 4 is a front, perspective view of alock handle restraining device constructed according to the presentinvention;

FIG. 5 is an end elevational view of apparatus constructed according toa modified embodiment of the 2 present invention mounted on a door andoverlying a door lock;

FIG. 6 is a side elevational view of the apparatus illustrated in FIG.5; and

FIG. 7 is a partly sectional bottom plan view of the apparatusillustrated in FIG. 6.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring in the first instanceto FIGS. 1 4, a device constructed according to the present invention isparticularly adapted for use with a conventional screen door, generallydesignated 10, swingably mounted on a door casing, generally designated12, between a closed position, illustrated in FIG. 1, and an openposition. The door 10 may include an opening covered by a screen 11. Thedoor casing 12 is provided with a boltreceiving notch or recess 15 for apurpose to become immediately apparent. A strike plate 15a surrounds thebolt receiving recess 15, as usual.

A door lock, generally designated 16, is mounted on the inside 10a ofthe door 10 and includes a housing 18, fixed to the door 10 by screws19, mounting a bolt 20 which is longitudinally movable between anextended or locking position, illustrated in FIGS. 1 and 3, received inthe door casing recess 15, and a retracted position in which the bolt 20is removed from the recess 15, permitting the door 10 to be swung openin the direction represented by the arrow 0 (FIG. 3). The bolt 20 isnormally biased to the extended position by a spring (not shown)disposed interiorly of the housing 18. The housing 18 includes sidewalls 18a and 18b, an end wall 18c flush with the edge of the door, anopposite, curvilinear end wall l8d, and a top wall l8e.

The door lock 16 includes a key operated, tumbler set, generallydesignated 22, having a keyway on the outside 10b of the door 10 forreceiving a tumbler operating key 23. When the key 23 is turned, thetumbler 22 moves the bolt 20 from the extended to the retractedpositions, as usual.

The door lock 16 also includes a bolt-actuating handle, generallydesignated 24, connected to a stem 26 which is operatively connected tothe bolt 20 to longitudinally move the bolt 20 between its extended andretracted positions when the handle 24 is swung in either direction,represented by the arrows b and 0 (FIG. 1). The handle 24 includes acurvilinear end portion 25 which is inclined toward the door 10. Thelock may typically be a lock such as Yale Springbolt GW 3-36manufactured by Yale Lock & Hardware Division of Eaton, Yale & Towne,401 Theodore Fremd Avenue, Rye, N. Y. The bolt 20 includes an inclinedend face 21 which engages the strike plate 15a on the door casing 15 toforce the bolt 20 to its retracted position when the door is beingclosed.'

The handle restraining device for preventing the unauthorized turning ofthe'handle 24 about the axis of the stem 26 is generally designated 30and comprises a continuous wire or rod 33 bent to form a large loop 31,converging toward the door in the position shown in FIG. 3, and definingan opening 39, and a smaller outwardly diverging loop 34 defining anopening 35. The larger loop 31 includes rearwardly converging sideportions 32 extending along the sides 18a and 18b of the housing 18 andwelded to each other at 36. The sides 32 include inclined end portions38, converging toward the door 10 and spanned by an end portion 40which, in operative position, underlies the bolt 20. The open- 3 ing 35in the smaller loop 34 receives the portion 25 of the handle 24.

The handle restraining device 30 is installed on the lock 16 by firstlymoving the loop 34 over the handle portion 25 to the positionillustrated in chain lines at 30 (FIG. 3), and then swinging the device30 downwardly to the position illustrated in solid lines in FIG. 3. Asthe device 30 is being swung downwardly, the end wire portion 40 of thelarge loop 39 will engage the inclined face 21 on the bolt 20 and forceit to a withdrawn position. As soon as the wire portion 40 passes thebolt 20, the bolt 20 will be spring returned outwardly to the positionillustrated in FIG. 3. When the handle restraining device 30 is in thehandle restraining position, illustrated in FIG. 3, the side portions 32of the device 30 will be sprung slightly out of the plane of theretaining device 30 so that the end wire portion 40 will be urged intoengagement with the outside surface 21a of the bolt 20. When the device30 is installed in the position illustrated in FIGS. 1 and 2, the handle24 is locked in position and cannot be swung in the directionsrepresented by the arrows b and c to retract the door bolt 20. The endportions 38 and 40 engage the edge 180 of the housing to precludelongitudinal movement of the device 30 when it is installed asillustrated in FIGS. 1 3.

To remove the restraining device 30, the lock 22 is turned by the key 23to withdraw the bolt 20 and permit the wire portion 40 to be moved pastthe end of the bolt 20 to the bolt-releasing position, illustrated inchain lines in FIG. 4, and the door to be opened outwardly in thedirection of the arrow 0. When the arms 32 spring to the positionillustrated in chain lines permitting the device 30 to be removed, thehandle 24 is free to be turned.

Referring now more particularly to FIGS. 5, 6 and 7, apparatus forpreventing turning of the handle 24 is generally designated T andcomprises a hood or cover, generally designated 50, having top andbottom walls 52 spanned by a side wall 54 and one end wall 56. The topand bottom walls 52 include integral, pin receiving members 57 havingbores in alignment with aligned bores in pin receiving members 58 (FIG.6) mounted on the inside 10a of the door 10 for receiving locking pins60 having enlarged heads 62. When the door 10 is opened, the cover 50may be readily, quickly removed by merely sliding the pins 60 out of thebolt receiving members 57 and 58. When the door is closed, the pins 60are in endwise alignment (FIG. 7) with the door casing 12 to precludetheir removal. Mounted on the side wall 54 of the cover 50 is a tumblerlock assembly, generally designated 66 including rotatable, internal,handle grasping portions 68 which receive the bolt operating handle 24.The tumbler lock assembly 66 includes a keyhole for receiving a key 70which, when turned about its axis, turns the handle grasping portions 68to turn the handle 24 about its axis.

The cover 50 is installed by placing it over the door lock 16, when thedoor 10 is open, so that the apertures in the pin receiving members 57and 58 are in alignment and inserting the pins 60 into the alignedopenings. The door 10 is then closed. In the event that the user needsto get outside, he merely inserts the key 70 in the tumbler 66 and turnsit to turn the handle 24 which retracts the bolt 20 from the recess andpermits the door 10 to be swung open. If the user wants to enter thehouse from the outside, he merely turns the 4 key 23 as describedhereinbefore to withdraw the bolt 20 so that the door 10 can be swungopen. In the event that a prowler cuts through the screen 11 on the door10 and reaches inside the door 10, he will be unable to grasp the handle24 to turn the bolt 20.

It is to be understood that the drawings and descriptive matter are inall cases to be interpreted as merely illustrative of the principles ofthe invention, rather than as limiting the same in any way, since it iscontemplated that various changes may be made in various elements toachieve like results without departing from the spirit of the inventionor the scope of the appended claims.

What is claimed is:

1. In combination:

a door lock for a door swingable between open and closed positionsincluding a longitudinally extending bolt longitudinally movable betweenan extended door-locking position to preclude swinging of said door anda retracted position permitting the door to be swung between said closedand open positions;

key operated, bolt operating means, receiving a key on one side of saidlock, for moving said bolt between said extended and retractedpositions;

manually operable, bolt operating means including a handle on the otherside of said lock, swingable about an axis transverse to saidlongitudinal bolt, for moving said bolt between said retracted andextended positions; and

means for preventing the unauthorized turning of said handle about saidaxis including a cover overlying said handle means;

means for removably coupling said cover to one of said door and saidlock; and

key operated means, mounted on said cover and adapted to receive a keyon the side of said lock opposite said one side, for turning said handleto move said bolt between said extended position and said retractedposition.

2. The combination set forth in claim 1 wherein said coupling meanscomprises pin receiving means on said housing and one of said door andsaid lock means, and elongate pin means slidably received by said pinreceiving means.

3. A door lock security device for a door and door lock including alongitudinally extending bolt longitudinally movable between an extendeddoor-locking position and manually operable, bolt operating meansincluding handle means swingable about an axis transverse to saidlongitudinal bolt, for moving said bolt between said retracted andextended positions, said device comprising means for preventing theunauthorized turning of said handle means about said axis including acover for overlying said handle means;

means for removably coupling said housing to one of said door and saidlock; and

key operated means, mounted on said cover and adapted to receive a key,for turning said handle means to move said bolt between said extendedposition and said retracted position.

4. The device set forth in claim 3 wherein said means for preventingsaid turning is positioned so as to be in axial alignment with saidhandle.

1. In combination: a door lock for a door swingable between open andclosed positions iNcluding a longitudinally extending boltlongitudinally movable between an extended door-locking position topreclude swinging of said door and a retracted position permitting thedoor to be swung between said closed and open positions; key operated,bolt operating means, receiving a key on one side of said lock, formoving said bolt between said extended and retracted positions; manuallyoperable, bolt operating means including a handle on the other side ofsaid lock, swingable about an axis transverse to said longitudinal bolt,for moving said bolt between said retracted and extended positions; andmeans for preventing the unauthorized turning of said handle about saidaxis including a cover overlying said handle means; means for removablycoupling said cover to one of said door and said lock; and key operatedmeans, mounted on said cover and adapted to receive a key on the side ofsaid lock opposite said one side, for turning said handle to move saidbolt between said extended position and said retracted position.
 2. Thecombination set forth in claim 1 wherein said coupling means comprisespin receiving means on said housing and one of said door and said lockmeans, and elongate pin means slidably received by said pin receivingmeans.
 3. A door lock security device for a door and door lock includinga longitudinally extending bolt longitudinally movable between anextended door-locking position and manually operable, bolt operatingmeans including handle means swingable about an axis transverse to saidlongitudinal bolt, for moving said bolt between said retracted andextended positions, said device comprising means for preventing theunauthorized turning of said handle means about said axis including acover for overlying said handle means; means for removably coupling saidhousing to one of said door and said lock; and key operated means,mounted on said cover and adapted to receive a key, for turning saidhandle means to move said bolt between said extended position and saidretracted position.
 4. The device set forth in claim 3 wherein saidmeans for preventing said turning is positioned so as to be in axialalignment with said handle.